20809085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{19913}}^1$

素因数の和:19948

約数の個数: 16

約数和(自身を含む): 28676160

約数和(自身を除く): 7867075

約数列:

[1, 5, 11, 19, 55, 95, 209, 1045, 19913, 99565, 219043, 378347, 1095215, 1891735, 4161817, 20809085]

約数ペア:

[(1, 20809085), (5, 4161817), (11, 1891735), (19, 1095215), (55, 378347), (95, 219043), (209, 99565), (1045, 19913)]